What is chass sa71 spn 52060204 code In 2009 Freightliner?

The code CHASS SA71 SPN 52060204 in a 2009 Freightliner indicates a fault in the vehicle's emissions system. Specifically, it points to an issue with the EGR (exhaust gas recirculation) system. The EGR system is responsible for reducing the engine's emissions by recirculating a portion of the exhaust gas back into the combustion chamber. This helps to lower the combustion temperature and reduce the formation of pollutants such as nitrogen oxides (NOx).

When the CHASS SA71 SPN 52060204 code appears, it means that the EGR system is not functioning properly. This can be due to a number of reasons, such as a faulty EGR valve, a blocked EGR passage, or a malfunctioning sensor. As a result, the vehicle will produce higher emissions and may not meet emissions standards.

To resolve the issue, it is important to diagnose the root cause of the problem and repair or replace the faulty component. This may require the use of diagnostic tools and equipment to properly identify the problem. It is recommended to have the vehicle serviced by a qualified technician who is experienced in diagnosing and repairing emissions systems.

By addressing the CHASS SA71 SPN 52060204 code promptly, you can ensure that your vehicle meets emissions standards and operates efficiently.